Extension Cord Question!

J

jazlm

Active Member
My rule of thumb is: 12-2 wire, 20 amp breaker, 20 amp outlet & no ext. cords. I like to run a dedicated circuit(s) to my environment. I like the peace of mind. If you run one 1000 watt system on a 120 volt line it will equate to 8.3 amps, not counting the resistance from any type of ext. cords. 600 watts= 5 amps, 400 watts=3.3 amps.
You can figure out the amperage of you fans, lights, and all of the other equipment you want to run by using the above mentioned algebraic equation (in this situation: watts/volts=amps) ex. 400w/120v=3.3 amps.
Safety First.
Peace
 
joeyjoejoe

joeyjoejoe

Well-Known Member
yes if you have a substantial load on anything ,connections at any point should be tight. ie . wirenuts ,outlets , breaker terminations, ext cord connections. loose connections tend to heat up and arch under heavy loads. this is what causes the majority of fires, although in your case you should be fine. also make sure the cord doesnt kink or is not rolled up together on itself ( like if you had extra cord or something).just an extra precaution if the cord is plugged in under load and rolled together this will also cause heat on the cord itself . youd be surprised how many amps you could draw on a 12 gauge cord without it catchin on fire . they always underate things to prevent idiots from trying it though
 
N

nastynate420

Active Member
Gauge110V12V
225A5A
207.5A8A
1810A10A
1613A20A
1417A40A
1223A60A
1033A100A
846A150A
660A??A
480A??A
2100A??A
1125A??A
0150A??A

[h=4]Chart Notes[/h]
 
ArcticGranite

ArcticGranite

Well-Known Member
jazlm said:
I personally would not use an ext. cord due the fact that you lose amperage over the length of the cord.
Note: this coming from a licensed electrician.
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Please tell me you meant lose "voltage" and not amperage. Thank you

OP- With the load you intend to carry and the cord rating you've got room to spare. Plug your stuff in and turn it all on. Feel the cord- is it warm? If so, there's a problem.
 
PJ Diaz

PJ Diaz

Well-Known Member
One thing is.. If you have extra cord (ie: 25 foot extension cord to cover 15 feet of distance) don't coil the excess in a loop, but rather figure 8 it. It will get hotter if you loop it in a pile vs figure 8 = safer.
 
N

nastynate420

Active Member
[h=2]Voltage Drop[/h]
  • Ohm's law, VD = I x R, gives the voltage drop, VD, in volts for a conducting wire, where I is the current (amps) and R is the total resistance (ohms) of the wire. This equation is for direct-current (DC) circuits but also can be used for single-phase, alternating-current (AC) circuits with purely resistive loads (no inductive or capacitive elements).

[h=2]Examples[/h]
  • A 25-ft., 16-gauge (0.004235 ft. diameter) cord with a copper conducting wire, an internal temperature of 70 degrees C (158 degrees F) and carrying a 10-amp current has a total resistance of 0.26 ohms and a voltage drop of 2.6 volts. A 50-ft., 16-gauge cord has a voltage drop of 5.2 volts, while a 50 ft, 14-gauge (0.005340 ft diameter) cord would have a voltage drop of 3.3 volts, assuming the same current and temperature.
    For a standard 120-volt household outlet, the recommended voltage drop from the cord should be less than 3 percent (3.6 volts). Minimize the voltage drop by using the shortest possible cord. If a long cord is unavoidable, reduce the voltage loss by using a cord with a larger diameter (lower gauge) wire



Read more: Wire Gauge Vs. Voltage Drop | eHow.com http://www.ehow.com/facts_6897621_wire-gauge-vs_-voltage-drop.html#ixzz2FHltQWEM


Learn what your talking about people!!
 
Highocaine

Highocaine

Well-Known Member
He could've meant "lose amperage" as in "lose maximum allowable amperage", and there is a voltage drop across the wire, proportional to distance and resistivity.
 
kvnbeach

kvnbeach

Active Member
Nice Ol Bud said:
How much you be yeilding out of that bitch?
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I will find pics

Strawberry Cough 6-5-2012 004.jpg
Harvest 021.jpgHarvest 012.jpgHarvest 010.jpgHarvest 008.jpgHarvest 002.jpg

SO I have only been growin for a year. So almost every grow I have had a problem. This is one of my better grows. It is Bubba Kush. It was a massive yielder but not very potent. I got almost 8oz. I vegged with a 400. So even with spider mites I got 3oz off a GDP, I got 3 oz. off an Afghani and it had spider mites. I know longer have a problem with mites, I now fight powdery mildew. I see a spot I spray it with Neem oil. Works great, especially if u are able to keep up with it. Dont want a sulfur burner, my grow room is too small.
 
P

pokesalotasmot

Well-Known Member
Oops, my bad guys. It's been a while since I played around with this sort of thing. I should have double checked myself before posting a response. Sorry about the confusion. :(
 
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